//
//  SISSAboutUsWebViewController.m
//  SISSAPP
//
//  Created by 优房网 on 2017/6/19.
//  Copyright © 2017年 优房网. All rights reserved.
//

#import "SISSAboutUsWebViewController.h"

#import <WebKit/WebKit.h>

@interface SISSAboutUsWebViewController ()<WKNavigationDelegate,WKUIDelegate>

@property (nonatomic, strong) WKWebView *webView;

/*
 *1.添加UIProgressView属性
 */
@property (nonatomic, strong) UIProgressView *progressView;

@end

@implementation SISSAboutUsWebViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    
}

/**
 初始化
 */
- (void)setupSubviews {
    [super setupSubviews];
    
    WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.bounds];
    webView.navigationDelegate = self;
    webView.UIDelegate = self;
    [self.view addSubview:webView];
    self.webView = webView;
    
//    [SISSTools showSVTitle:@"数据加载中..." andTime:30 andColor:NO];
    
    NSString *urlString = [NSString stringWithFormat:@"http://%@",self.url];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
    request.timeoutInterval = 15.0f;
    [self.webView loadRequest:request];
    
    // 2.初始化progressView
    UIProgressView *progressView = [[UIProgressView alloc] initWithFrame:CGRectMake(0, 64, [[UIScreen mainScreen] bounds].size.width, 2)];
    progressView.backgroundColor = COLOR(0x334A60);
    //设置进度条的高度，下面这句代码表示进度条的宽度变为原来的1倍，高度变为原来的1.5倍.
    progressView.transform = CGAffineTransformMakeScale(1.0f, 1.5f);
    [self.view addSubview:progressView];
    self.progressView = progressView;
    
    // 3.添加KVO，webView有一个属性estimatedProgress，就是当前网页加载的进度，所以监听这个属性。
    [self.webView addObserver:self forKeyPath:@"estimatedProgress" options:NSKeyValueObservingOptionNew context:nil];
}

#pragma mark - 监听

/*
 *4.在监听方法中获取网页加载的进度，并将进度赋给progressView.progress
 */
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context {
    
    if ([keyPath isEqualToString:@"estimatedProgress"]) {
        self.progressView.progress = self.webView.estimatedProgress;
        if (self.progressView.progress == 1) {
            
             // 添加一个简单的动画，将progressView的Height变为1.4倍
             // 动画时长0.25s，延时0.0s后开始动画
             // 动画结束后将progressView隐藏
            __weak typeof (self)weakSelf = self;
            [UIView animateWithDuration:0.8f delay:0.25f options:UIViewAnimationOptionCurveEaseOut animations:^{
                weakSelf.progressView.transform = CGAffineTransformMakeScale(1.0f, 1.4f);
            } completion:^(BOOL finished) {
                weakSelf.progressView.hidden = YES;
                
            }];
        }
    }else{
        [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
    }
}

#pragma mark - WKWKNavigationDelegate Methods

/*
 *5.在WKWebViewd的代理中展示进度条，加载完成后隐藏进度条
 */
// 开始加载
- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation {
    NSLog(@"开始加载网页");
    //开始加载网页时展示出progressView
    self.progressView.hidden = NO;
    //开始加载网页的时候将progressView的Height恢复为1.5倍
    self.progressView.transform = CGAffineTransformMakeScale(1.0f, 1.5f);
    //防止progressView被网页挡住
    [self.view bringSubviewToFront:self.progressView];

}

// 加载完成
- (void)webView:(WKWebView *)webView didFinishNavigation:(WKNavigation *)navigation {
    NSLog(@"加载完成");
//    [SISSTools dissmiss];
    //加载完成后隐藏progressView
//    self.progressView.hidden = YES;
}

// 加载失败
- (void)webView:(WKWebView *)webView didFailProvisionalNavigation:(WKNavigation *)navigation withError:(NSError *)error {
    NSLog(@"加载失败");
//    [SISSTools showSVTitle:@"数据加载失败..." andTime:1 andColor:NO];
    //加载失败同样需要隐藏progressView
    self.progressView.hidden = YES;
}

- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error {
    NSLog(@"加载失败");
}

//页面跳转
- (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler {
    //允许页面跳转
    NSLog(@"%@",navigationAction.request.URL);
    decisionHandler(WKNavigationActionPolicyAllow);
}

/*
 *6.在dealloc中取消监听
 */

- (void)dealloc {
    
    [self.webView removeObserver:self forKeyPath:@"estimatedProgress"];
}


@end
